Chest CT Scan FAQs
A CT scan is an an imaging procedure that uses special X-ray imaging equipment to create a series of highly detailed pictures, or scans, of areas including hard and soft tissue inside the body. The procedure is non-invasive, requires minimal radiation exposure, and can simultaneously depict tissues of different densities, which is not possible with traditional X-ray methods.
A chest CT scan creates precise pictures of the structures inside the chest, including the lungs. A chest CT scan may be used to view the size, shape and position of the lungs, follow-up on abnormal results from a standard chest X-ray, or investigate the cause of lung symptoms such as as chest pain or shortness of breath. In some cases, a contrast dye is injected into a vein in the arm, prior to the CT scan. This substance highlights areas in the chest, which helps to create clearer images.
Why is this procedure performed?
A chest CT scan may be used to investigate lung problems or diagnose a disease, as well as:
- Detect abnormal growths
- Diagnose tumors
- View fluid within or around the lungs
- Guide biopsy or other medical procedures
A chest CT scan may also be used to plan future treatment, procedures or surgery.
How should patients prepare for this procedure?
Patients may be asked to refrain from eating or drinking for several hours before the procedure, especially if a contrast material is being used during the scan. Metal objects such as jewelry, eyeglasses and hair clips should be removed prior to the procedure, along with hearing aids and removable dental work. If the patient is pregnant, she should advise the doctor prior to the procedure.
What happens during the procedure?
During the chest CT scan, the patient lies on a table and is positioned based on the radiologist's instructions. The technician leaves the room and the table slowly moves through the CT machine, a large tunnel-like machine that has a hole in the middle. This X-ray tube moves around the body and takes pictures of the inside of the chest and body. During the procedure, patients must lie still and may be asked to hold their breath for short periods of time. A chest CT scan takes, on average, 10 to 30 minutes to complete.
What will patients experience during the procedure?
The chest CT scan is a painless procedure. During the procedure, patients may hear soft buzzing or clicking noises as the scanner takes pictures. If a contrast dye is injected, patients may feel warm and have a metallic taste in the mouth, however, these symptoms only last a few minutes. If a patient feels anxious, or nervous in tight or closed spaces, the doctor may administer medication prior to the CT scan to help the patient relax.
What are the benefits of this procedure?
A chest CT scan is a non-invasive procedure that provides detailed pictures of the size, shape, and position of the lungs and other structures in the chest. CT scan images provide much more information than regular X-rays and the images are immediately available. A chest CT scan is an effective tool for diagnosing lung problems and investigating troubling lung symptoms.
For more information about Chest CT Scan FAQs, Call Arash Padidar's office at 408-918-0405